iOS 添加功能引导图

首次安装app之后，打开app首页，有一张功能引导图，其实最简单的一种做法是，直接在这个首页上加一个蒙层图片。在蒙层上用气泡显示文字注明功能介绍，这个蒙层图片，让你们的UI设计师给你。

然后在进入首页的viewDidAppear方法里，添加上你的蒙层

[self initIntroduceView];

下面是添加的简单示例代码：

示例

- (void)initIntroduceView{if (![USERDEFAULT objectForKey:@"IsShowIntro"]) {UIImageView *introImg = [[UIImageView alloc] initWithFrame:self.view.bounds];introImg.tag = INTRO_TAG;introImg.userInteractionEnabled = YES;if (iPhone4S) {introImg.image = [UIImage imageNamed:@"explanation_960"];}else{introImg.image = [UIImage imageNamed:@"explanation"];}[self.tabBarController.view addSubview:introImg];UITapGestureRecognizer *tap = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(removeIntroImg)];tap.numberOfTapsRequired = ;[introImg addGestureRecognizer:tap];}}- (void)removeIntroImg{[USERDEFAULT setObject:[NSNumber numberWithBool:YES] forKey:@"IsShowIntro"];UIImageView *imgView = (UIImageView *)[self.tabBarController.view viewWithTag:INTRO_TAG];[imgView removeFromSuperview];}关于几个宏#define USERDEFAULT [NSUserDefaults standardUserDefaults]#define iPhone4S ([UIScreen instancesRespondToSelector:@selector(currentMode)] ? CGSizeEqualToSize(CGSizeMake(640, 960), [[UIScreen mainScreen] currentMode].size) : NO)#define INTRO_TAG 50000